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林业科学 ›› 2014, Vol. 50 ›› Issue (1): 149-155.doi: 10.11707/j.1001-7488.20140122

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一种新型速生材单板改性技术——密闭环境下的高温饱和蒸汽软化和横向压缩处理

刘红玲1,2, 郭康权1,3, Frederick A. Kamke2, Tran Van Cuong1,4   

  1. 1. 西北农林科技大学机械与电子工程学院 杨凌 712100;
    2. 俄勒冈州立大学木材科学与工程系 科瓦利斯 97331;
    3. 陕西省农业装备工程技术研究中心 杨凌 712100;
    4. 一号越-俄职业技术大学 福安 11000
  • 收稿日期:2012-11-19 修回日期:2013-09-25 出版日期:2014-01-25 发布日期:2014-01-25
  • 基金资助:

    国家公益性行业(农业)专项(201003063-07)。

A Novel Modification Technology of Fast-Growing Wood Veneer: Softening at High Temperature with Saturated Steam and Transverse Compression in A Sealed Environment

Liu Hongling1,2, Guo Kangquan1,3, Frederick A. Kamke2, Tran Van Cuong1,4   

  1. 1. College of Mechanical and Electronic Engineering, Northwest A&F University Yangling 712100;
    2. Department of Wood Science and Engineering, Oregon State University Corvallis, Oregon 97331, USA;
    3. Research Center of Agricultural Equipment Engineering and Technology of Shaanxi Yangling 712100;
    4. Vietnam-Russian Vocational College Number One Phuc Yen city, Vinh Phuc province 11000, Viet Nam
  • Received:2012-11-19 Revised:2013-09-25 Online:2014-01-25 Published:2014-01-25
  • Contact: 郭康权

摘要:

介绍一种新型低密度速生材单板改性技术——密闭环境下的高温饱和蒸汽软化和横向压缩处理。它利用木材的黏弹性,生产出一种高机械性能、良好尺寸稳定性和良好胶合性能的压缩木产品。此工艺是为改性厚度小于10 mm的低密度薄板而开发,木材的软化、致密和定型都在一个可保持高温高压密闭环境的设备中完成。处理过程只需要20 min左右,所采用的温度在150~200℃之间,既缩短了生产周期,又避免了纤维素在高温下降解而削弱了压缩木的强度。单板压缩后可与其他单板进行胶合,形成一种新的高强度木基复合材料,用于室内装饰、家具制造、木建筑的构件等。本文介绍此新型压缩技术的工艺流程、生产设备和研究现状,分析其压缩产品的应用前景,并对其今后的研究给出一些建议。

关键词: 低密度速生材单板, VTC压缩木, 木材软化, 横向压缩, 尺寸稳定性

Abstract:

This paper introduces a novel technology for modification of low-density fast-growing wood veneer, softening at high temperature with saturated steam and transverse compression in a sealed environment. It exploits the viscoelastic characteristics of wood and produces compressed wood products of high mechanical properties, high dimensional stability and high bonding performance. This process designed for thin wood lamina(<10 mm). Softening, densification and fixation of wood can be accomplished in a device that can maintain a sealed environment of high temperature with saturated steam. This process only takes around 20 min and the adopted temperature is 150 to 200℃, the production cycle is reduced and the thermal degradation of cellulose is avoided. Compressed lamina can be bonded with other veneer and produce a new wood-based composite product. It can be used for interior, furniture and construction. This article reviews the procedure, device and research status of this technology and analyzes the utilization of compressed wood. In addition, some suggestions about the research direction are proposed.

Key words: fast-growing wood veneer, VTC compressed wood, softening of wood, transverse compression, dimensional stability

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